Move activity streams logic into its own service class

app/Services/ActivityStreamsService.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace App\Services;
+
+use App\Note;
+
+class ActivityStreamsService
+{
+    public function siteOwnerResponse()
+    {
+        $data = json_encode([
+            '@context' => 'https://www.w3.org/ns/activitystreams',
+            'id' => config('app.url'),
+            'type' => 'Person',
+            'name' => config('app.display_name'),
+            'preferredUsername' => 'jonnybarnes',
+        ]);
+
+        return response($data)->header('Content-Type', 'application/activity+json');
+    }
+
+    public function singleNoteResponse(Note $note)
+    {
+        $data = json_encode([
+            '@context' => 'https://www.w3.org/ns/activitystreams',
+            'summary' => 'Jonny added a note to his microblog',
+            'type' => 'Add',
+            'published' => $note->updated_at->toW3cString(),
+            'actor' => [
+                'type' => 'Person',
+                'id' => config('app.url'),
+                'name' => config('app.display_name'),
+                'url' => config('app.url'),
+                'image' => [
+                    'type' => 'Link',
+                    'href' => config('app.url') . '/assets/img/jmb-bw.jpg',
+                    'mediaType' => '/image/jpeg',
+                ],
+            ],
+            'object' => [
+                'id' => $note->longurl,
+                'type' => 'Note',
+                'url' => $note->longurl,
+                'name' => strip_tags($note->note)
+            ],
+        ]);
+
+        return response($data)->header('Content-Type', 'application/activity+json');
+    }
+}